Collapsible heart valve sizer



FIG. 1 is a top perspective view of a collapsible heart valve sizer in accordance with a second embodiment.

FIG. 2 is a bottom perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a right side elevation view thereof.

FIG. 5 is a rear elevation view thereof.

FIG. 6 is left side elevation view thereof.

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

CLAIM The ornamental design for a collapsible heart valve sizer, as shown and described. 